I wanted very much to have her, because I'm a big Portal fan. But just as a wink. She's not cake-obsessed. She's not out to destroy humanity. I said, ‘Look, there's no A.I. I'd rather have than GlaDOS. The filter we're using [in the film] is slightly less GLaDOS. Slightly. The one in the trailer I wanted to be full-on GlaDOS.